Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Warrant Liabilities, Fair Value Assumptions (Details)

v3.3.1.900
Fair Value Measurements - Warrant Liabilities, Fair Value Assumptions (Details) - Warrant Liabilities [Member]
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Minimum [Member]    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Expected volatility 166.00% 70.00%
Risk-free interest rate 0.64% 0.03%
Expected term (in years) 11 months 9 days 1 month 2 days
Maximum [Member]    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Expected volatility 183.00% 73.00%
Risk-free interest rate 0.74% 0.67%
Expected term (in years) 1 year 2 months 9 days 2 years 2 months 9 days